Ruger Mark I - ammo

I've run bulk federal in my MK I and have had no issues. I got mine for a smoking deal as well and other than needing a good cleaning when I got it it has been perfect.
 
Rugers will eat any ammo you feed them. Enjoy your Mk. 1- very accurate, great trigger.
 
No need to put the fancy expensive stuff into it. The gun will shoot just fine with any of the lighter 38gn HV rounds. I've mostly used CCI Blazer in my own MkIII with the recent addition of a box of Federal 525 bulk ammo. It works fine with both.
 
i asked ruger about stingers in my MK III before. they said stingers and hyper velocity ammo shouldn't be used in it as it wasn't rated for it
 
i asked ruger about stingers in my MK III before. they said stingers and hyper velocity ammo shouldn't be used in it as it wasn't rated for it

I'm not surprised. The added speed to take it to the "hyper" side implies an increased powder charge. And the recoil spring would not be chosen to deal with the added recoil impulse. That could lead to the bolt beating at the rear stop of the frame.

On simply HV or "High Velocity" ammo the added speed seems to come only from the use of a lighter bullet than the SV or "Standard Velocity" ammo. Specifially 36 to 38 gns for the HV vs 40 gns for the SV ammo.
 
I tried some American Eagle/Federal stuff [cheap] in my MarkII, and it worked flawlessly...so I bought a case of it.

If you have trouble with your gun, try a different brand of ammo. But you probably aren't going to have any trouble.
 
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